Investors & Media

Mr. Van Ness serves as the Lead Independent Director and has been a director since October of 1981. He is Chairman of Hidden Hill Advisors, a venture capital consulting firm. From April of 1996 through October of 1999, he was a Managing Director of CIBC Capital Partners, an international merchant banking organization. From 1986 through March 31, 1996, Mr. Van Ness was a General Partner of Olympic Venture Partners II and Rainier Venture Partners, venture capital funds, and from 1977 until 1985, he was a General Partner of the venture capital group at Hambrecht & Quist, the manager of several venture capital funds.

Mr. Bowes has been a director since February of 1986 and has been a general partner of U.S. Venture Partners since 1981 and currently holds the position of founding partner. Mr. Bowes is also a director of one private company.

Mr. Hutt, former chief counsel for the Food and Drug Administration (FDA), became a director in May of 2005. Mr. Hutt is currently senior counsel to the Washington, D.C. law firm of Covington & Burling, specializing in food and drug law and trade association law. Since 1994, he has taught a course on food and drug law at Harvard Law School and taught the same course at Stanford Law School in 1998. He is also a co-author of Food and Drug Law: Cases and Materials. Mr. Hutt serves on a wide variety of academic and advisory boards, including the Institute of Medicine (IOM) of the National Academy of Sciences (NAS) and the Panel on the Administrative Restructuring of the National Institutes of Health (NIH). Additionally, he serves as legal counsel to the Society of Risk Analysis as well as the American College of Toxicology. Formerly, he has served on the IOM Executive Committee, advisory committee to the director of the NIH, the NAS Committee on Research Training in the Biomedical and Behavioral Sciences, and the National Committee to Review Current Procedures for Approval of New Drugs for Cancer and AIDS established by the President's Cancer Panel of the National Cancer Institute at the request of President George Bush. Mr. Hutt received his undergraduate degree from Yale University, and law degrees from Harvard University and New York University.

Dr. Scannon is one of the founders of the company and has served as a director since its formation. Dr. Scannon became chief scientific and medical officer in March of 1993. He served as president of the company from its formation until April of 1992 and as vice chairman, scientific and medical affairs from April of 1992 to March of 1993. From 1979 until 1981, Dr. Scannon was a clinical research scientist at the Letterman Army Institute of Research in San Francisco. A Board-certified internist, Dr. Scannon holds a Ph.D. in organic chemistry from the University of California, Berkeley, and an M.D. from the Medical College of Georgia.

John Varian was appointed CEO of XOMA in January 2012 after serving as Interim CEO for five months. He has served as a XOMA director since December 2008. He was Chief Operating Officer of Aryx Therapeutics from December 2003 through August 2011 and was its Chief Financial Officer from April 2006 through March 2011. Previously, Mr. Varian was Chief Financial Officer of Genset S.A., where he was a key member of the team negotiating the company's sale to Serono S.A. in 2002. From October 1998 to April 2000, Mr. Varian served as Senior Vice President, Finance and Administration of Elan Pharmaceuticals, Inc., joining the company as part of its acquisition of Neurex Corporation. Prior to the acquisition, he served as Neurex Corporation's Chief Financial Officer from June 1997 until October 1998. From 1991 until 1997, Mr. Varian served as the VP Finance and CFO of Anergen Inc. Mr. Varian was an Audit Principal / Senior Manager at Ernst & Young from 1987 until 1991 where he focused on life sciences. He is a founding member of the Bay Area Bioscience Center and a former chairman of the Association of Bioscience Financial Officers International Conference. Mr. Varian received a B.B.A. degree from Western Michigan University.

Timothy P. Walbert joined the XOMA Board of Directors in November 2010. He is Chairman, President and Chief Executive Officer of Horizon Pharma, a privately held biopharmaceutical company focused on developing and commercializing innovative medicines arthritis, pain and inflammatory diseases. From 2007 until 2009, Mr. Walbert was President, Chief Executive Officer and a director of IDM Pharma, Inc., a publicly traded oncology-focused biotechnology company. Prior to IDM, he was Executive Vice President of Commercial Operations for NeoPharm, Inc., a publicly traded biopharmaceutical company.

From 2001 to 2005, Mr. Walbert was with Abbott Laboratories in positions of increasing responsibility, most recently as Vice President, International Marketing responsible for overseeing strategy for the global cardiovascular franchise. As Abbott's Divisional Vice President and General Manger for Immunology, Mr. Walbert created and had full P&L management of the global immunology franchise that led the development and introduction of HUMIRA®, the multi-indication biologic that was the most successful launch in Abbott's history and is on track for over $6 billion in annual sales in 2010.Prior to his tenure at Abbott, Mr. Walbert was with Searle/Pharmacia where he held several North American and international marketing roles for CELEBREX®. Mr. Walbert holds a B.A. degree from Muhlenberg College, Allentown, PA. He serves on the Board of the Illinois Biotechnology Association and the Greater Chicago Arthritis Foundation.

Jack L. Wyszomierski, a seasoned executive with extensive leadership experience in the pharmaceutical and life sciences industries, was elected to XOMA's Board of Directors in August 2010. From 2004 until his retirement in 2009, Mr. Wyszomierski was Executive Vice President and Chief Financial Officer of VWR International, LLC, a global laboratory supply, equipment and distribution business that serves the world's pharmaceutical and biotechnology companies, as well as industrial and governmental organizations. At Schering-Plough, a global health care company which had worldwide sales of over $8 billion in 2004, Mr. Wyszomierski held positions of increasing responsibility from 1982 to 2004 culminating in his appointment as Executive Vice President and Chief Financial Officer.

Mr. Wyszomierski also serves on the Board of Directors of Athersys, Inc. (Nasdaq:ATHX) and Exelixis, Inc. (Nasdaq:EXEL). He holds an M.S. in Industrial Administration and a B.S. in Administration, Management Science and Economics from Carnegie Mellon University.